Any particular class or type of hybrid you are considering. The one I see quite often are tubes in the preamp section of an integrated amp. But people are using class A input sections of class D output amps. There are many different ways to hybridize anp and its seems many get made
My personal evolution in this hobby culminated when I decided to use mono bloc tube amps. I don't think much of these tube pre amp SS power amps. My earnest advice is to ignore the hype and mystery of putting a tube somewhere in the circuit and you get tube sound. Save time money and disappointment and buy eith a tube amp or a good transistor amp (as Ralph calls SS.)
My personal evolution in this hobby culminated when I decided to use mono bloc tube amps. I don't think much of these tube pre amp SS power amps. My earnest advice is to ignore the hype and mystery of putting a tube somewhere in the circuit and you get tube sound. Save time money and disappointment and buy eith a tube amp or a good transistor amp (as Ralph calls SS.)